Subterranean pumping system.



F. C. WEBER.

SUBTBRRANBAN PUMPING SYSTEM.

`Patented Apr. 18

APPLICATION FILED JAN.21. 1909.

A TTOHNE YS 'FBEDERICKQ WEBER, nor 'NEW IYann, N. Y.

SUBTERRANEAN P'UMPING SYSTEM.

Specification of Letters Patent. iPntellted `Apr. 18, 1911.

To dll 'whom 'it may' concern:

Be it known that'LFnEnERrcx C. VEBnR, a citizen-of the United States,residing 1n the city of New York, county and State of- New `York,haveinvented certain new and useful l"Improvements in Subterranean PumpingSystems; and "I do hereby declare the following to'be afull, clear, andexact description of the invention, such as will en able others skilledin the art to which it a pertains to 'make, construct, and use t e same,reference lbeing. had to the accompanying drawings, and to.1etters ofreference marked thereon, forming a partof this specification.

n My invention relates to that class of pum ing systems whereincompressed air is utilized as the motive power for elevating the waterfrom a deep subterranean water level to'the surface of the ground, andoperates upon the :generalplan of the well known force+pump. I dispensehowever, with the usual plunger piston of the force-pump, and utilizelthe pressure of air in an inclosed chamber for "elevating the waterthrough thepsystem.

. The essential parts of a complete plant consist of an air compressor,an air receiver, an automatic reversing valve together with the air andwater pipes, :and the necessary pump valv'es, and my invention relatesparticularly 5to improvements in the reversing valve and-in themeans forforming the liquid chamber and the valves connected there-y Theaccompanyingdrawings illustrate an embodiment of my invention, wherein-Figure 1 illustrates a complete plant showing two wells connectedl to asingle delivery pipe; and Fig. 2-il1ustrates in vertical section, thedetails o'f the reversing valve.

Similar letters of reference refer to like parts throughout thespecification and drawv Fig. 1, the reference numeral 1 is. the aircompressor which maybe of any usual or desired type; 2 is the compressedair receiver located in proximity to the air com- Thetwo wells A `and Bma `be water, oil,

salt, or other-wells, or the rainage outlets rfor mines. In'Fig. 1' ofthe drawings, I'have shown the two wells A and B as provided withdifferent structures [to Vmeet different conditions, and while suchstructures embody the-same genericprinciples, yet'they differ indetails. In'the well A, I'provide a tubular well casing 5 extending fromthe surface to a 4pointbelow lthe level of the liquidtobefpumped,and'this casing is utilized inthe hereinafter to be described. The upperend of the casing 5is provided with the liquid discharge 6l to which itis connected by means ofthe e bow 7. Located at the lower end oformation of the liquid chamber the casing 5,'isthe'intake Y8, totheupper Y end of -which is secured `the valve cage 9, within which cage islocated ther ball cheek valve 10, said valve resting upon `a valve seat11, -as clearly shown in the drawings. This valve cage' 9-is providedwith the openings 121forming a passageway between thelower intake 8 andthe chamber above v vupon a valve seat 16. The'uplper end of the valvecasing 14 is connected y means of a pipe 17, with a orted casting 1'8,said cast- 1n being provi ed with a central and later-A al y defiectedport 19, which connects directly with the liquid chamber 20. Securedtothe upper side of thecasting 18, is an upper liquid seal 21. Theseliquid seals 13 and 21 are substantially alike in structure andoperatedvin the'same manner from the same source of fluidpressure. Theyconsist ofjthe tubular castings'22, provided with upper and lowerflanges 23, and between these flanges, and directly secured to thetubular portions of the castin s, are located the flexible seals proper,sai seals consisting of tubes of rubber or other suitable fabric, whichare made both water and'air tight by securely connecting the up er andlower ends of said seals'to the tubu ar pory tions of the arts 22, justinside of the flanges 23, as c early illustrated inthe drawings. Themethods of securing may be accomplished by means of wrap ingl wirearound the' extremities of the flexible' tubing, so as to secure thesame in air'tght connection with the tubular portions of the castings22, so as to form a liquid chamber between the tubular portions 22.

Compressed air is admitted to the space between the flexible tubing andthe tubular portions of the castings by means of the pipe 24, leadingfrom the compressed air reservoir 2, suitable passages being provided inthe castings`22 and 22 for that purpose, so that when air pressure isadmitted to the space between the flexible tubings and the castings 22and 22, the exible tubing will expand outwardly into contact with thetubular casing 5, and thereby form an air .and liquid tightchamberbetween the upper and lower seals 21 and 13. In this manner, I amenabled to utilize that portion of the casing 5 between the upper seal21 and the lower seal 13, as a liquid chamber, the purpose of which willbe hereinafter set forth.

In the well B, which is intended to 'illustrate a well` in which theuse-of the casing 5 extending to and below the liquid level in the well,would be impractical, I have shown such casing 5 as extending down onlya short distance, and from the upper end of such casing, is supportedthe interior tubing 26, such tubing extending down to a suitabledistance and carrying at its lower extremity, the casting 27, similarinall respects to the casting 18, having the passage 19 locatedtherein,'in the same manner as the passage 19 in the casting 18.

Secured to the casting 27 and extending downwardly therefrom into theinterior of the well, is the tube 28, forming the chamber 29. At thelower extremity of the tubing 28, I have provided a valve casting 30,the lower end of which is provided with a valve seat 31, upon whichrests the ball valve 32.

Within'the casting 30 and contiguous to the ball-valve 32, are the -webs33, 'Whichy form guides for the ball valve 32 in its rise and fallduring the operation of the\valve.

Located above the webs 33, is thel second valve seat 34, upon which isseated the ball-f valve 35, said ball valve being inclosed in a valvecasing 36. The upper end of this valve casing 36 is connected to thecasting 27 by means of the interior .tube 37, said tube 37 forming apassageway between the interior of the valve casing 36 and the tube 26,through.` the passage 38 in the casting 27. The vupper end of the tube26 connects with the discharge 39, which leads to the common discharge40 from the other well.

\ Leading from the ports of the reversing valve 4, are the tubes 41and'42, said ubes passing through the elbows 7 and 43,locatedy upon theupper ends of the casings `5, and connected therewith by the glands 44,,`to render them air. and water tight. These tubes 41 and 42 leaddownwardly into the interior of the casings, and to the ports 19' springcap 76, said spring'cap bein of the reversing valve 4. This reversingvalve consists of the valve casing 45 and the port casting 46. The valvecasing45 is provided with a tubular chamber 47, within which is locatedthe valve casting 48, having upon each end the two pistons 49. Thechamber 47 is closed at either end by means oftheheads 50. The twopistons 49 are connected together by means of the integral web 51, `inthe center lof which is located a vertical aperture 52, in which isguided the stem 53 ofthe ldouble-D valve 54, said -valve resting uponthe valve seat 55, which is a part of the port casting 46. ,The twopistons are identically the same'` in structure, that upon theright-hand .being shown in section ashollow, and provided with a smallby-pass 56, it being understood that each piston 49 is rovided with sucha by-pass.

n Ports 157 and 58 are shown leading from the chamber 47 through theport casting 46 to the release valves hereinafter to be described.Through the valve seat 55 ofthe port casting 46, are also the ports 59and 60, leading to the pipes 41 and 42, and the central or exhaustport61. Pressure is admitted into the interior of the valve chamber47between the pistons 49, through thepipe 62 from the air reservoir 2.Located in the upper part of the chamber 47, is a horizontal shaft 63,said shaft projecting laterally outside of the valve casing 45, andprovided upon its outer extremity with the handle 64. Upon that portionof the shaft 63 which is vinside of the valve casing 45, is thedownwardly extending arm 65, which projects into the vertical aperture52 of the piston web 51. By operating this handle 64 from the exteriorof the valve casing, itwill be readily understood that the pistons 49and valve 54 may be operated from the exterior by hand, to set the samein either of their extreme positions. From the port 57 leads the shortpipe`66, said ipe connecting with the globe check valvev 6 This checkvalve is provided with the chambers 68 and 69, connected by the passage70, which forms a seat for the upwardly opening valve 71. The stem 72 ofthe valve 71 extends upwardly through the gland 7 3,' and carrles uponits upper end a spring seat 74. The compression spring 75 rests upon thespring seat 74,` the 4upper end bearlng upon the con-` nected to theflanges of the gland 3 by means of the adjusting rods 77. The tendenoyofthe springf775 in thls structurefis'to maintain the valve 71 upon-itsseat,lso as to retain` the pressure within the left-hand end ofthe'chamber 47 of the valve casing 45.

' `wardly instead of 'upwardly as in valve 67.

The upper side of this valve 85 is provided with the valve stem 86,connected at its upper end to a spring cap 87, with the compressionspring 88 located between said spring Y cap and the upper end of thegland B9. The

tendency of the spring 88 is to maintain the valve 85 upon its seat toretain the pressure within the valve casing 45.

Extending from the lower side .of the valve 85, is a stem 89 connectedto the center of the diaphragm 90, Said diaphragm forming a diaphragmchamber 91, similar in all respectsto the diaphragm chamber 81. Thisdiaphragm chamber is connected by means'of the pipe 92 to the tube `42.1n connection with the diaphragm chamber 81, it will be understood thatif pressure is ad mitted to said diaphragm chamber, sufficient toovercome the tension of the spring 75, it will result in'unseatin thevalve 71, and thereby open the port 5 to the atmosphere, whereas, if avacuum is established 1n the diaphragm vchamber 91 sufficient ,tb over`come the tension of the spring 88, thevalve 85 would be unseated, andthereby the chamber 47 would be open to the atmosphere. From the exhaustport 61, leads the suction pipe 93 to the suction side of theaircompressor.

. I will now proceed to describe the operation of the pump.

It will be understood that the compressor 1 has been in operation asuiiicient length oftime to store the reservoir 2 with air to asufficient pressure, and such compressor being constantly in operation,results in maintaining such pressure to a predetermined point. -Thepressure from the reservoir 2 is led yto the valve casing 45 through thepipe 62, passing from the same through the small y ports 56 in the endsof the pistons 49, completely filling the chamber 47, the port 57 andthe chamber 68 above the valve 71. The pressure also passes around thedouble- D valve 54 through the ports 60 into the pi 42, from which it iscarried into the liquid chamber 29. This pressure exerted upon thesurface of the waterwhich is contained in this liquid chamber, willresult in unseating the valve 35, thereby forcing the liquid up throughthe tube 37 to`the discharge tube 39, and out through the finaldischarge40.

At thesame time that this operation is go` ing on, the suction 'side ofthe compressor is in` connection with the corresponding liquid chamber20 of well A, thereby creat.

ing a vacuum in said liquid chamber 20 through the exhaust 61,y port 59,and

tube 41 and port 19, resulting in causing a rise of the water from thewell past the valve 10 to fill said liquid chamber 20.

It will be understood that when the air is being forced through the pipe42, to force the water in liquid chamber 29 into the pipe 37 and to thedischarge 39, that this pressure is constantly rising and being free topass through the lpipe 82 to the diaphragm chamber 81, it is clear thatwhen said pressure hasarrived at a point sufficient to overcome thesprin 75, the valve 71 Will iise and thus open te port 57 to the atmoshere. This sudden exhausting of the port 5 and that portion of thechamber 47 at the lefthand end thereof, permits the stored-up ,ing theport 59 to the interior of the valve casing and the port 60 to theexhaustY lport 61. This shifting is due to the relative sizes of pass 56and port 57 pass 56 being about 1/50 of the cross-sectionl of port 57.

It is -understood now that the liquid chamber 20 is full of water, whilethe liquid chamber 29 is nearly exhausted ofwater. Now the conditionsbeing reversed, the continued operation of the compressor will re sultin withdrawing the previously co`m. pressed air and forming a vacuum inchamber 29, and permitting pressure to pass from the reservoir 2, to thesurface of the water in chamber 20. rThis vacuum in chamber 29 willcontinue to build up until the degree of exhaustion therein, and also inthe pipe 42, which it is understood is in connection with the pipe 92,will result in eventually unseating the valve 85, this occurrin when thedegree of vacuum shall be su cient to overcome the tension of the spring88. The unseating of the valve results in opening the port 58 to theatmosphere, when the pressure which has been passing through the port 56in the left-hand piston 49, will drive the pistons 49 tothe right-handend of the chamber 47, thereby reversing the valve 54. Thus, it will beseen that by creating an,alternate condition of vacuum and pressure inthe liquid chamber 29, the valve 54 is alternately reversed, to permitthe alternate filling and exhausting of the water in the. chamber 29,and while this is goin on, the alternate exhausting and filling o thechamber 20.

In Fig; 2, I have shown the entire operation of the reversing valve 4 asdepending upon the alternate pressure and vacuum `conditions in thechamber 29. Under these conditions, it will be noted thatthe liquidoperate the reversing valve,so that the well A and the parts connectedtherewith may,

`if' conditions so' require, be entirely dis-4 pensed with. If however,it is desired to chamber 20 is at no` time depended upon to 'operate twowells it is only necessary to connect the pipe 41 with the second wellA,and its parts as shown. Where two wells are to be operated, I mayutilize two of the vacuum chambers 91, instead of the pressure diaphragmchamber 81. When this formv degree of the vacuum in said liquidchambers. On the other hand, I may use two of the upwardly opening globevalves 67 for operating the reversing valve, instead of the constructionjust described, substituting a small globe 'valve 67 for theglobe valve84. Under these conditions, the right-hand valve 67 will becross-connected to the pipe 41, and the left-hand valve with the pipe42, as clearly illustrated` in connection with said valves in Fig. 1.Under these conditions, the two operating valves 71 will be operated toreversethe reversing valve through the pressure which may be exerted inthe corresponding pipe `41 or 42, and this pressure will be due to theheight to which the water has been forced in the dischargepipes 6 and39, it being understood that the governing springs 7 5 have been sadjusted, that the 4valve 71 will trip, when a predetermined heightofwater shall havebeen attained.

From the above description, it will be observed that after apredetermined pressure has ybeen attained in the reservoir 2, and thecompressor is operated to maintain such pressure, the air in the systemis made to circulate from4 the reservoir through the reversingvalvetolthe liquid chambers 2O and v 29, until the predetermined heightsof water have been attained, and then back from said liquid lcharnherthrough. the valves to the compressor, whence it is again sent tothereservoir 2, and the only loss of air which the system sustains duringthis operation is that which escapes through the globe valves 67 and 84,due to the unseating of said valves and the shifting of the reversingvalve. This loss slight though itmay be would in time amount to enoughto seriously affect the system, and in order that the system may bereplenished with air, I .have provided in theA suction pipe 93, anintake check valve 94, so that. when the vacuum' in\ the` pipe 93 andthe ports with which it is connected comes` to a predetermined point ofexhaustion,

4said check valve'wil'l'lnpen and admit atmo's-.

AUnder t-hese conditions, the

`closing the same.

'a suicient amount of pipe is necessary pheric air into the system, andthereby replenish it.

It will be understood that conditions may arise, where the installationof the well system as illustrated at B, will be advisable, and otherconditions where' the well system A can best be installed, and still,other conditions where but a single well exists. Under allof theseconditions, it will be seen that my system is applicable, and Lthat thewell end A operates upon identically the same principle as the well endB.

In order that proper adjustment of the springs 75 and 88 may be providedfor, I have shown a pressure gage C, located in the pipe 82, so that thepressure` gage will indicate the degree of pressure in the system, atwhich point, it is desired that the reversing valve shall operate.

It will be understood that with either of, the forms of operating Valves67 or 84, a pressure gage may be located in the corresponding pipe 82 or92, and this, for the purpose only of determining the degree' ofpressure or vacuum at which the corresponding valves are to operate tochange the position of the reversing valve.

As above indicated, either the structures shown in well'A or in the wellB may be used either independently or together as conditions mayrequire. Wherebut a single wellis intended to be in operation, theconditions will dictate which form is to be installed.

When but a single Well is in operation, it is understood that thereversing valve `4 will be coupled up as indicated in Fig. 2. port 59should remain closed, or some provlsion made for This I have shown inFig. 2 by providing the pipe 41 with a shutoi' valve 95, it beingunderstood that only provide such a` shut-od valve, or if deslred, theport 59 can be closed with a solid plug in place` -of the short lengthof tubing. These of course are features which will occur -to any oneskilled in the art to which my invention pertains. I may alsoaccomplisli the'same purpose by inserting-a check valve 95,in the pipeas shown.

I claim: j

1. Ina pumping system, the lcombination of a source of fluid pressuresupply, with a liquid chamber, a pipe connection bet'ween said supplyand said chamber, a .reversing valve in said pipe connectionforalternately admitting pressure to and exhaustin the same from saidchamber, means for shifting said valve comprising a duplex piston, ay

casing therefor, a bypass in each head of said piston to permit the slowaccumulation of pressure on each side thereof and thereby balance saidpiston, meanscontrolled by the degree of pressure or vacuum in saidchamber and pipe connection for releasing said accumulated pressurealternately from opposite'ends of said duplex piston.

tween'said means and said chamber, an auto-f matic 'reversing valvelocated in said pipe connection, a balanced 4duplex piston for operatingsaid valve, a by-pass in each head of said piston to permit theequalization of pressure on all sides thereof, supplemental releasevalves forpermitting a predetermined maximum pressure in said liquidchamber to release the pressure on one side of, and thus disturb thebalanced'presslue on said piston and permit the direct pressure to shiftsaid piston and reversing valve to permit the creating of a vacuum insaid chamber and .thereby cause the rise of liquid therein through saidinlet valve.

3. In a pumping system, the combination of a liquid chamber havingvalved inlet and discharge passages at its lower end, said inlet passagedesigned to be normally submerged in liquid to be pumped, means for,causlng alternate conditions of pressure and vacuum in said chamber,said means includ* ing a reversing valve, a duplex pressure balancedpiston for operating said valve and release valves for disturbing thepressure balance upon said piston, said release valves beingrespectively actuated by the alternate conditions of pressure and vacuumin said chamber, whereby liquid is caused to be drawn into said chamberand thereafter forced out from said chamber through said dischargepassage.

4. In a pumping systeln, the combination of a liquid chamber havingvalved inlet and discharge passages at its lower end, said in letpassage being normally submerged in the liquid to be pumped, means forcausing alternate conditions of pressure and vacuum in said chamber,whereby liquid is caused to be drawn into said chamber through saidvalved inlet passage and thereafter forced out from said chamber thoughsaid valved discharge passage, said means including a reversingvalveoperated by direct pressure and auxiliary valves operated by thepredetermined conditions of pressure and vacuum to cause automatically areversal of said conditions.

5. In a pumping system, the combination of a liquid chamber, with meansfor creating alternate and predetermined conditionsof fluid ressure andvacuum in said chamber, valved) inlet` and discharge passages in thelower end of said chamber, automatic means for reversing the conditionsof pressure and vacuum in said chamber, said means including a reversingvalve operated by the direct fluid pressure and auxiliar valvesdepending for its operation upon t e predetermined degree of pressureand vacuum Within said chamber.

6. In a umping system, the combination of means or producing a fluidpressure and a vacuum, a liquid chamber provided with `inlet anddischarge valves normally submerged in liquid to be pumped, a pipe connectlon between said means and said chamber, a reversing valve andcasing located in said pipe connection and, a duplex piston in saidcasing and connected to said reversing valve for operating the same,auxiliary release valves connected to said casing, means for permittinga predetermined pressure or vacuum in said pipe connection toalternately actuate said release -valves thereby permitting direct fluidpressure to actuate said piston and reversingV valve to alternatelyconnect said liquid chamber with said pressure and vacuum producingmeans.

7. In a pumping system, the combination with pressure and vacuumproducing means, a reversing valve and casing therefor, and a liquidchamber, pressure and vacuum pipes connecting said valve casing withsaid pressure producing lmeans and said vacuum producing meansrespectively, a pipe connecting said casing with said liquid chamber,release valves connected to said casing, and to lsaid liquid chamberpipe, one of said release valves actuated by a predetermined maximumpressure and the othen release valve actuated by a predetermined maximumvacuum in said liquid chamber pipe to operate said reversing valve toalternate the conditions of pressure and vacuum in said liquid chamber.

8. In a pumping/system, the combination of a liquid chamber havingvalvedinlet and discharge orifices at its lower end, a discharge pipeconnected with said discharge orifice, means connected with said liquidchamber for producing alternateeconditions of pressure and vacuum insaid chamber, and a reversing valve in said connection operated bydirect pressure, means for operating said reversing valve including anauxiliary valve actuated by the ressure in said chamber -to reverse thecondltion in said chamber from ,pressure 'to vacuum, and meansincludingan auxiliary 4valve actuated by the vacuum in said chamber `foroperating said `reversing valve to reverse the condition in said chamberfrom vacuum to pressure.

9. In a pumping system, the combination with means for producing airpressurejand vacuum, of a reversing valve comprising a valve casing,pressure and .vacuum `ports and pipes connecting said casing with saidmeans,

a service port and pipe leading from said' utilized for shifting saidvalve member to alternately connect said service pipe with Said pressureand vacuum pipes respectively.

10. A reversing valve for pumping systems, comprising a valve casing,pressure and vacuum pipes leading to said casing, a service pipe leadingfrom saidfcasing toa .liquid chamber, a valve within said casing indirect communication with said pressure pipe, means' actuated by thevalternate andpredetermined condition of .pressure and vacuum in saidservice pipe whereby the pressure in the lead-in pressure pipe isutilized for shifting said valve to alternately connect said servicepipe with said vacuum and pressure pipes respectively. v

11. In a pumping system, the combination of a liquid chamber having avalved inlet at ,its lowerg-iextremity, a valved discharge pipeextending into said chamber, a combined vacuum and compressor pump forproducing .alternate conditions of vacuum and pressure within saidchamber to causel liquid`to rise into said-chamber and force the sameout through said valved discharge pipe, and an automatic reversing valveactuated by direct pressure and auxiliary valve actuated by thepredetermined conditions of vacuum or of pressure in said chamber toautomatically rreverse said conditions.

12. In a pumping system the combination of a source of fluid pressuresupply'with a pair of liquid chambers and a reversing valve, a pipeleading from said pressure supply to said valve, and pipes leading fromsaid valve to said chambers, a pressure balanced piston l for reversingsaid valve to alternately connect said pressuresupply with said chambersand to exhaust the same respectively,jand supplemental release valvesactuated by thev predetermined' maximum and minimum pressures in saidchambers to release .the balanced pressure on one side of said piston tocause a reversal of said valve and a con' sequent reversal of thecondition of pressure and exhaust in said chambers respectively.

13. In a fpumping system, the combination of means or creating a fluidpressure and a vacuum, Ya pair of liquid chambers each having inlet andoutlet valves normally submerged in liquid to be' pumped, a pipeconnection between said means and said chambers, an automatic reversingvalve locatedl in said pipe connection, a duplexdirectrpressure-actuated balanced piston for operating said valve, aby-pass in each part of said piston to permit the accumulation ofpressure on both sides thereof,`an' .auxiliary valve for releasing saidaccumulated pressure from one side of said piston, means for permittinga predetermined maximum of pressure in one of saidvchambers to actuatesaid auxiliary valve,whereby the exhaust of the direct pressure upon oneside'of said piston will shift said reversing valve -to permit thecreation of a vacuum in oneof said chambers and a simultaneouspressure'in the other chamber. -v

14. In ay pumping system, the combination of a pair of liquid chamberseach having 75 valved inlet and dischargepassages at .,;its, lower end,said inlet passages being' nofrmally submerged inliquid to be pumped,means for causing -a condition of predetermined pressure in one chamberand a condi` 80 ytion of predetermined vacuum in the other chamber,together with means including a reversing valve operated bysdiiectpressure and auxiliary valves lactuated by` pressure and vacuum in saidliquid chambers for Vsimultaneously `alternating said conditions in saidchambers, whereby liquid is simultaneously drawn' i'nto one ofsaid'chambers y and discharged from the otherl chamber through thecorresponding inlet and discharge passages, and thereafter forced outfrom said irstnained chamber and drawn into said second-named chamberthrough the corresponding inlet and discharge passages.

. 15. In a umping system, the combination of a pair oi? liquid chamberseach having inlet and discharge passages at itsdower end, said inletpassages being normally -submerged in liquid to be pumped, means forcausing alternate and` predetermined conditions of pressure and vacuumand vacuum and pressure in said respective` chambers,

ywhereby liquid is caused-to be drawn into one of said chambers, andsimultaneously discharged from the otherl chamber and thereafterdischarged from the first-named chamber and simultaneously drawn intosaid second-named chamber, said means including a reversing valveoperated by direct pressure and auxiliary valves operated by alter- 1,10nate vand predetermined conditions of pressure and vacuum to causeautomatically a reversal of said conditions.

16. In a pumping system, the combination of a pair of liquid chamberswith means-for creating a condition of Huid pressure in one of saidchambers, and a simultaneous condition of vacuum in the other lof saidchambers, valved inlet and dischargel passages at the lower ends of each`of said chambers, automatic means for reversing' the conditions ofpressure and vacuum in each of said chambers, said means comprising abalanced piston, a' reversing valve connected, theretat l and anauxiliary valve for releasin sure from one side of said piston, saiauxiliary valve depending for its operation uponthe degree of pressureWithin one of said chambers. e

17. In a pumping system, the combina- ,mit the accumulation of pressureon both i ,said piston, and an auxiliary valve actuated sides thereof, areversing valve connected to by pressure in one of said chambers torelease the balanced pressure upon one side of 'said piston and therebypermit direct pressure to operate said reversing valve to y reverse thecondition in said chamber from pressure to vacuum and; simultaneouslychange the condition in the 'other chamber lfrom vacuum to pressure. 20

18. In` a pumping system, the combination of a pair of liquid chamberseach havp ingf'inlet and discharge orifices at its lower end,a dischargepipe connected with each of said dischar e orifices, means connectedwith each of said liquid chambers for producing alternate conditions ofpressure and vacuum'in one ofsaid chambers and simultaneous alternateconditions of vacuum and pressure in the other chamber, a duplexpressure balanced piston, "a reversing valve connected' thereto anauxiliary valve actuated by pressure in one of said chambers to disturbthe pressure balance upon one end of said piston a second auxiliaryvalve actuated by the vacuum in said chamber for disturbing the pressurebalance upon the other end of said piston, to alternately reverse theconditions in each of said chambers re-` spectively.

19. In a pumping system, the combinavtion with means for producing airpressure `and vacuum, a reversing valve'comprising a valve casing,pressure and vacuum ports and pipes connecting said casing with saidhr4-'5 imeans, a lpair of service ports and pipes leading from saidcasing, a reversin y valve member within said lcasing operate by thedirect fair pressure and means including i auxiliary valvesy actuated bythe alternate and predetermined conditions of pressure and vacuum insaid service pipes for shiftingthe reversing valve member to alternatelyconnect. said service pipes with said pressure and vacuum pipesrespectively.

20. A reversing valve for pumping systems, comprising a valve casing,pressure and vacuum pipes leading to said casing, a pair of4 servicepipes leading from said casing toa pair of liquid chambers respectively,

4a valve within said casing operated directly by the pressure in saidpressure pipe, means .actuated by the alternate and predetermined Ycondition of pressure and vacuum in one .of

ysaid service pipes for permitting the presto alternately connect saidservice pipes with said vacuum and pressure pipes respectively.

21.. In a pumping system, the combination of means for creating a fluidpressure and a vacuum, a liquid chamber provided with inlet and outletvalves normally submerged in liquid to be pumped, a pipe connected tosaid liquid chamber for introducing the'fluid pressure .or vacuum, areversing valve connected to said pipe, pressure and vacuum pipesconnected to said valve, a reciprocating piston for operating saidreversing valve, said piston being operated by the direct fluidpressure, auxiliary valves for permitting the direct fluidpressuie tooperate said reversing valves and means for operating said auxiliaryvalves by the predetermined conditions of pressure or vacuum in saidliquid chamber, whereby said conditions in said liquid chamber arereversed.

22. In a pumping system,"the combination of means for creating a fluidpressure and a vacuum, a liquid chamber provided with inlet and outletvalves normally lsubmerged in liquid tolse pumped, a pipe connected tosaid iquid chamber for introducing the fluid pressure or vacuum, a valvechamber connected to said pipe, inlet and exhaust ports yin the path ofsaid inlet port for operating said` reversing valve, said piston beinreciprocated by direct pressure of the fluid in said inlet pipe,auxiliary ,valves for permitting the operation of said reciprocatingpiston,- said auxiliary valves being operated by predeterminedconditions of ressure or vacuum in said liquid chamber, W ei'eby saidreversing valve is operated to reverse said pressure or vacuum,conditions in said liquid chamber.

23. In a pumping system, the combination of means for creating a fluidpressure and a vacuum, a liquid chamber provided With inlet and outletval-ves normally submerged in liquid to be pumped, a pipe connected tosaid liquid chamber for introducing the -fluid pressure* or vacuum, avalve chamber connected to said pipe, inlet and exhaust ports for saidvalve chamber, a fluid pressure pipe connected to said inlet port and avacuum pipe connected to said exhaust port, a reversing valveforalternately connecting said inlet4 and exhaust ports with said liquidchamber pipe, whereby said liquid chamber may be subjected to alternateconditions of pressure and vacuum, a double headed reninrnrntino nieh'min Hm afk n# Mill {vdniof said piston heads being provided with byvalve,whereby the previous condition 'of 10 passes whereby the pressureongrhe--ipis1zbn pressure or` vacuum in said liquid chamber is balanced,auxiliary valves opereted by a is reversed. Y

predetermined condition of pressure Aor This specication signed 'andwitnessed v [vacuum in said liquid chamber, lthe opening this 9th 'dayof .December 1908.

of either of seid auxiliary valves disturbing.` FREDERICK C, WEBER.

the balance of said piston, thereby permit- Witnesses:

tingrhe direct pressure in said inlet cham- H. LACROIX,

berto operate said piston and the reversing WILLIAM HARGRAVES.

